Nitrogen → (1-{2-[5-(4'-bromo-biphenyl-4-yl)-1H-imidazol-2-yl]-pyrrolidine-1-carbonyl}-2-methyl-propyl)-carbamic acid methyl ester

HRID 79668Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 79668
[CH3:1][O:2][C:3](=[O:36])[NH:4][CH:5]([C:9]([N:11]1[CH2:15][CH2:14][CH2:13][CH:12]1[C:16]1[NH:17][C:18]([C:21]2[CH:26]=[CH:25][C:24](B3OC(C)(C)C(C)(C)O3)=[CH:23][CH:22]=2)=[CH:19][N:20]=1)=[O:10])[CH:6]([CH3:8])[CH3:7].[Br:37][C:38]1[CH:43]=[CH:42][C:41](Br)=[CH:40][CH:39]=1.C([O-])([O-])=O.[K+].[K+].N#N>C(COC)OC.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH3:1][O:2][C:3](=[O:36])[NH:4][CH:5]([C:9]([N:11]1[CH2:15][CH2:14][CH2:13][CH:12]1[C:16]1[NH:17][C:18]([C:21]2[CH:22]=[CH:23][C:24]([C:41]3[CH:42]=[CH:43][C:38]([Br:37])=[CH:39][CH:40]=3)=[CH:25][CH:26]=2)=[CH:19][N:20]=1)=[O:10])[CH:6]([CH3:7])[CH3:8]

Komponenten

7

Edukt 4

HCID 947NitrogenHCID 78041,4-DibromobenzeneHCID 11430Potassium CarbonateHCID 66619939[2-Methyl-1-(2-{4-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-1H-imidazol-2-yl]-pyrrolidine-1-carbonyl)-propyl]-carbamic acid methyl ester

Produkt 1

HCID 66620194(1-{2-[5-(4'-bromo-biphenyl-4-yl)-1H-imidazol-2-yl]-pyrrolidine-1-carbonyl}-2-methyl-propyl)-carbamic acid methyl esterAusbeute 53 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178418397HCID 178418397, VerbindungKatalysatorHCID 80711,2-DimethoxyethaneLösungsmittel

Reaktionsbedingungen

Temperatur
85 °C

Versuchsvorschrift

A solution of [2-methyl-1-(2-{5-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-1H-imidazol-2-yl}-pyrrolidine-1-carbonyl)-propyl]-carbamic acid methyl ester (300 mg, 0.60 mmol), 1,4-dibromo-benzene (95 mg, 0.40 mmol) and aqueous K2CO3 (800 μl of a 2M solution) in dimethoxyethane (4 mL) was degassed with N2 gas for 20 minutes. To the degassed solution was added Pd(PPh3)4 and the reaction was heated to 85° C. overnight. After cooling to room temperature, the reaction was quenched with acetic acid, filtered, and then concentrated. The crude product was purified by reverse phase preparative HPLC (10-85% MeCN—H2O; 0.1% formic acid modifier) to afford both the monosubstituted product (1-{2-[5-(4′-bromo-biphenyl-4-yl)-1H-imidazol-2-yl]-pyrrolidine-1-carbonyl}-2-methyl-propyl)-carbamic acid methyl ester (111 mg, 0.21 mmol, 53% yield) and the desired bis substituted product (1-{2-[5-(4-{2-[1-(2-methoxycarbonylamino-3-methyl-butyryl)-pyrrolidin-2-yl]-3H-imidazol-4-yl]-[1,1′;4′,1″]terphenyl-4″-yl)-1H-imidazol-2-yl}-pyrrolidine-1-carbonyl}-2-methyl-propyl)-carbamic acid methyl ester (24 mg, 0.074 mmol, 19% yield): 1H-NMR: 400 MHz, (DMSO-d6) δ: 11.79 (s, 2H), 7.85-7.62 (m, 12H), 7.53 (s, 2H), 7.29 (d, 2H), 5.02 (m, 2H), 4.07 (t, 2H), 3.82 (m, 4H), 3.54 (s, 6H), 2.15-1.90 (m, 10H), 0.91 (d, 6H), 0.86 (d, 6H). LCMS-ESI+: calc'd for C46H55N8O6: 815.4 (M+H+). Found: 815.7 (M+H)+.

Aufarbeitung

  1. temperatureAfter cooling to room temperature
  2. customthe reaction was quenched with acetic acid
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customThe crude product was purified by reverse phase preparative HPLC (10-85% MeCN—H2O; 0.1% formic acid modifier)

Quellen und Nachweise

ORD-Eintrag
ord-a82c215e268143c48e70b2b9761cc6f7
Quelldatensatz
uspto-grants-2014_09
Patentnummer
US08841278B2

Notizen zur Reaktion

Wird geladen…